Device for rolling sheet metal with grooved bars



W. L. JENKINS.

DEVICE FOR ROLLING SHEET METAL WITH'GROOVED BARS.

APPLICATION TILED OCT-23.1919.

Patented May 3,1921.

2 SHEETSSHEET l.

W. L. JENKINS- DEVICE FOR ROLLING SHEE'T METAL WITH GROOVED BARS- APPLICATION FILED 0CT'23,19l9.

Patented May 3, 1921.

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UNITED STATES PATENT OFFICE.

WILLIAM L. JENKINS, 0F NILES, OHIO.

DEVICE FOR RQLLTNG sI-IEET IIJIETAL WITH GEOOVED BARS.

Application filed October 28, 1919.

T 0 rill 10710-772. it may concern:

Be it known that W'ILLIAH L. JENKINS, citizen of the United States of America, residing at Niles, in the county of Trumbull and State of Ohio, has invented certain new and useful Improvements in De vices for Rolling Sheet Metal with Grooved Bars, of which the followin is a specification.

This invention relates to a device for rolling sheet metal with grooved bar. The present methods used in rolling sheet and tin plate are substantially the same, the distinction being in the weight and width of plate produced. The bar from which the plate or tin plate is rolled comes in long lengths of 30 ft. or more, and of uniform width. After being cut to the length required these shorter bars are prepared for the first step of operation by being heated in a furnace, known as the pair furnace. From this furnace they are taken to the rolls in pairs, passed through the rolls four or five times, as required. The two sheets are then returned to the furnace and reheated. /V hen heated to a suitable temperature the sheets, or pack, are again passed through the rolls and drawn to a length required. They are then taken from the rolls and the two sheets are opened to prevent sticking. The pack is then doubled, making a pack of four sheets, and again returned to the fur nace. The reheated pack is now passed through the rolls, opened and again doubled, making a pack of eight sheets, which is again returned to the furnace. When the pack has become heated again it is taken to the rolls and finished off, or passed through the rolls, until the final required length and gage has been secured.

This method of producing sheet and tin plate is at the best slow and demands of the operatives difiicult and exhausting labor. especially in the doubling or bending of the packs.

My present invention has for its principal object to overcome these certain drawbacks and to increase the production of the mills. In order to do this I have provided a grooved bar and a mechanical fore-plate which are used in carrying out the operation of my device.

These grooved bars are heated in the same manner as the bars now in use. In feeding Specification of Letters Patent.

Fatented May 3, 1921.

Serial No. 332,651.

these bars into the mill they are fed so that the grooved part of the bar is parallel to the rolls.

A still further object of my invention is to provide a mechanical fore-plate which s used tobend the plates at the weakened central point caused by the groove.

In the accompanying drawings forming a part of this specification, Figure 1 is an end elevation of the rolls and improvements thereto. Fig. 2 is a top-view plan of the rolls and improved fore-plate. Fig. 3 is a detail top-view plan of fore-plate and bending device attached thereto. Fig. 4 is a detailed view of the bending device attached to the fore-plate showing movement of operation. 1g. 5 is a top-view of the grooved lgar. F 1g. 6 is an end-view of the grooved The rolls 1 are mounted in the usual, or any suitable manner, in the housing 2. By referring to Figs. 1 and 2 it will be seen that I have provided an improved fore-plate 3. By referring to Figs. 3 and 1 it will be seen I have provided a shaft 5; upon this shaft is keyed fingers 6. Keyed to the outer end ofthe shaft 5 is a crank 7. To this crank there is attached a pitman 8, which has its other end attached to a lever 9. This lever 9 is attached to the fore-plate at the pivot 10. By referring to Figs. 5 and 6 it will be seen that I have provided a groove 11 in the bar 12.

In operation the bars 12, two in number, pass the rolls, one following the other. In feeding these bars into the mill, the end 13 is fed first into the rolls so that the groove 11 is parallel to the rolls. These bars 12 after passing through the rolls 1 are lifted over the top roll 1 and passed through in this manner about three times. The ends of the bars are now doubled, the bend being at the weakened part caused by the groove 11. This abrupt bend at the groove 11 is now placed upon the fore-plate and the lever 9 pulled back until the fingers 6 firmly press the bend at the groove 11, together. The lever 9 is now thrown in a perpendicular position, thereby releasing the bent sheet, said fingers rotating upon the shaft 5 and passing through the openings 14 of the fore-plate so that they are out of the way and cause no obstruction to feeding the sheet into the rolls 1.

After this process is completed two of these bent sheets are placed together so that we now have four thicknesses of sheets. These are again passed through the rolls a desired number of times, the number of times depends on whether or not it is desired to finish the four sheets into the final length and thickness. It is understood that if they wish to, in this last process, they may be doubled by the ordinary means of placing the pack on the floor, where it is opened and doubled, returned to the furnace, heated and the pack now eight sheets in thickness finally finished to the desired length and gage,

It will be understood that changes may be made in the construction of the device which do not come without the scope of the claims, and it is desired not to be held strictly to the drawings and descriptions shown and described.

What I claim is:

1. The combination With a rolling mill of a fore-plate and a bending device attached thereto for bending a metal bar which has passed through the rolls.

2. In a device of the class described, the combination with a rolling mill of a foreplate and a bending device attached thereto, and means for operating said device substantially as described for the purpose set forth.

In testimony whereof I aflix my signature.

WILLIAM L. JENKINS.

Witnesses:

C. A, HARPMAN, E. C. GLASNER. 

